原文发布于 2012 年 5 月 3 日(星期四)我刚刚在对 SQL 2012 可用性组进行故障转移以使其在 SharePoint 2010 上正常运行时大获成功,因此,我想我应该与大家分享一下这个成果,希望能帮助到其他人。简而言之,我对 SQL 2012 可用性组全部进行了设置,使其看
原文发布于 2012 年 5 月 3 日(星期四)我刚刚在对 SQL 2012 可用性组进行故障转移以使其在 SharePoint 2010 上正常运行时大获成功,因此,我想我应该与大家分享一下这个成果,希望能帮助到其他人。简而言之,我对 SQL 2012 可用性组全部进行了设置,使其看起来运行正常。我在该组的主节点上创建了一个新的内容,然后对其进行备份并将它添加到可用性组 (AG) 管理的列表中。到目前为止一切都很好。我可以点击 SharePoint 网站,网站可以顺利打开。但是,在我将 AG 故障转移到一个新的节点后,我的 SharePoint 网站就再也不会出现了。相反,我会收到 403 禁止错误,而不是页面内容。然而,真正让人烦恼的是我可以打开 SQL Server 管理器并可成功地连接到我的 AG Listener,也就是说,我可以对目前驻留在不同上的内容数据库中的任一表进行查询并获取结果。
在花费了大量时间来试着搞清楚这一点之后,我的朋友及 SQL 疯子天才(褒义)Bryan P. 指出,在我的应用程序池帐户的数据库帐户与我的数据库一起移走时,SQL 登录并没有移走;我的意思是,如果我在内容数据库中搜索 SQL 管理器和查看“Security...Users”(安全...用户),则会看到应用程序池的 SQL 帐户。但是,如果我查看服务器的顶级“安全”节点,然后登录,则没有应用程序池的相应登录帐户。因此,我只创建了应用程序池帐户的登录,然后授予其访问使用 AG 管理的内容数据库的权限。在进行这样的更改后,一切都可在 SharePoint 上正常运行了,现在,我可以故障转移到该群集中的任何节点 ,且我的 SharePoint 网站会继续正常运行。
这听起来是一个值得注意的问题,尤其是在您使用新帐户创建应用程序池并希望您的内容数据库受到 AG 的保护的情况下,请确保已将这些新帐户添加到每个正在参与 AG 的 SQL 2012 服务器的登录中。

MySQLoffersvariousstorageengines,eachsuitedfordifferentusecases:1)InnoDBisidealforapplicationsneedingACIDcomplianceandhighconcurrency,supportingtransactionsandforeignkeys.2)MyISAMisbestforread-heavyworkloads,lackingtransactionsupport.3)Memoryengineis

Common security vulnerabilities in MySQL include SQL injection, weak passwords, improper permission configuration, and unupdated software. 1. SQL injection can be prevented by using preprocessing statements. 2. Weak passwords can be avoided by forcibly using strong password strategies. 3. Improper permission configuration can be resolved through regular review and adjustment of user permissions. 4. Unupdated software can be patched by regularly checking and updating the MySQL version.

Identifying slow queries in MySQL can be achieved by enabling slow query logs and setting thresholds. 1. Enable slow query logs and set thresholds. 2. View and analyze slow query log files, and use tools such as mysqldumpslow or pt-query-digest for in-depth analysis. 3. Optimizing slow queries can be achieved through index optimization, query rewriting and avoiding the use of SELECT*.

To monitor the health and performance of MySQL servers, you should pay attention to system health, performance metrics and query execution. 1) Monitor system health: Use top, htop or SHOWGLOBALSTATUS commands to view CPU, memory, disk I/O and network activities. 2) Track performance indicators: monitor key indicators such as query number per second, average query time and cache hit rate. 3) Ensure query execution optimization: Enable slow query logs, record and optimize queries whose execution time exceeds the set threshold.

The main difference between MySQL and MariaDB is performance, functionality and license: 1. MySQL is developed by Oracle, and MariaDB is its fork. 2. MariaDB may perform better in high load environments. 3.MariaDB provides more storage engines and functions. 4.MySQL adopts a dual license, and MariaDB is completely open source. The existing infrastructure, performance requirements, functional requirements and license costs should be taken into account when choosing.

MySQL uses a GPL license. 1) The GPL license allows the free use, modification and distribution of MySQL, but the modified distribution must comply with GPL. 2) Commercial licenses can avoid public modifications and are suitable for commercial applications that require confidentiality.

The situations when choosing InnoDB instead of MyISAM include: 1) transaction support, 2) high concurrency environment, 3) high data consistency; conversely, the situation when choosing MyISAM includes: 1) mainly read operations, 2) no transaction support is required. InnoDB is suitable for applications that require high data consistency and transaction processing, such as e-commerce platforms, while MyISAM is suitable for read-intensive and transaction-free applications such as blog systems.

In MySQL, the function of foreign keys is to establish the relationship between tables and ensure the consistency and integrity of the data. Foreign keys maintain the effectiveness of data through reference integrity checks and cascading operations. Pay attention to performance optimization and avoid common errors when using them.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

WebStorm Mac version
Useful JavaScript development tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SublimeText3 English version
Recommended: Win version, supports code prompts!
